What changes might occur in the vagina if lactobacilli were eliminated?
A. The acidic pH might change to a more neutral (and pathogen-fostering) level.
B. Lactobacilli often produce the anti-anaerobic bacteria compound hydrogen peroxide. Without it, anaerobic pathogens might cause disease states (e.g. gas gangrene).
C.
There would be no change in the health of the woman-other members of the normal microbiota would 'fill in the gap' in the population, resulting in no overall change.
D. The acidic pH might change to a more neutral (and pathogen-fostering) level AND lactobacilli often produce the anti-anaerobic bacteria compound hydrogen peroxide. Without it, anaerobic pathogens might cause disease states (e.g. gas gangrene).
D
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Which of the following statements is not correct?
a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously.
Which of the following is not one of the four most abundant elements in the body?
a. carbon b. hydrogen c. oxygen d. nitrogen e. calcium
The cell membrane of animal cells contains which lipid not seen in plant cells?
a. phospholipid b. glycolipid c. unsaturated fats d. cholesterol e. fatty acids
Refer to the accompanying figure. Which of these lungs would have the greatest surface area?
a. 1
b. 2
c. 3
d. 4
e. All have equal surface area.